SH7059 Datasheet, PDF (533/1042 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

17. Controller Area Network-II (HCAN-II)
Bit
Bit Name Initial Value R/W Description
5
SJW[1]
0
R/W Re-Synchronization Jump Width (SJW[1:0] = BCR0[5:4])
4
SJW[0]
0
R/W Set the synchronization jump width.
00: 1 time quantum
01: 2 time quanta
10: 3 time quanta
11: 4 time quanta
3, 2
—
0
1
EG
0
0
BSP
0
—
R/W
R/W
Reserved
The write value should be 0. The read value is not guaranteed.
Edge Select (EG = BCR1[1])
Selects at which edge is to be used for re-synchronization. In order to
comply with the standard CAN, 0 should be set.
0: Re-synchronization is performed at falling edge of Rx
1: Re-synchronization is performed at both rising and falling edges of Rx
Bit Sample Point (BSP = BCR1[0])
Sets the point at which data is sampled.
Important: Sampling at three points is only available when the BRP[7:0] is
programmed to be less than 4.
0: Bit sampling at one point (end of time segment 1)
1: Bit sampling at three points (end of time segment 1, and 1 time quantum
before and after)
• BCR0
Bit: 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BRP7 BRP6 BRP5 BRP4 BRP3 BRP2 BRP1 BRP0
Initial Value: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
R/W: ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ R/W R/W R/W R/W R/W R/W R/W R/W
Bit
Bit Name
15 to 8 —
7
BRP[7]
6
BRP[6]
5
BRP[5]
4
BRP[4]
3
BRP[3]
2
BRP[2]
1
BRP[1]
0
BRP[0]
Initial Value R/W
0
—
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
Description
Reserved
The write value should be 0. The read value is not guaranteed.
Baud Rate Prescale (BRP[7:0] = BCR0 [7:0])
Set the clock used for 1 time quantum.
00000000: 1 × Pφ (peripheral clock)
00000001: 2 × Pφ (peripheral clock)
00000010: 3 × Pφ (peripheral clock)
:
(BRP + 1) × Pφ (peripheral clock)
11111111: 256 × Pφ (peripheral clock)
Rev.3.00 Mar. 12, 2008 Page 443 of 948
REJ09B0177-0300